New lever-type gas self-closing valve

Abstract

The present invention discloses a novel lever-type gas self-closing valve. In this solution, a swing block cooperates with a fixed seat, and the left and right swing of the swing block causes the blocking rod to move back and forth, thereby causing the air intake plug to open or close the air intake cavity, and a driving motor cooperates with a gear rack mechanism to drive the mounting seat to move, so that the corresponding connecting rod is inserted into the lifting button connecting hole, and a driving motor cooperates with a gear transmission mechanism to drive the connecting rod upward and synchronously lift the lifting button to open the valve. When in use, a built-in APP can be installed in the mobile phone to control the start and stop of the two driving motors by the APP, thereby realizing online control of lifting the lifting button, without the need for manual opening on site, and convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of valve devices, in particular to a novel lever-type gas self-closing valve. Background Art

[0002] A gas self-closing valve is a safety device installed at the end of a gas pipeline that senses gas pressure, automatically closing, and can be manually reset. The valve uses the magnetic force of a permanent magnet to engage and disengage at specific pressures, thereby automatically closing the gas valve in ultra-low pressure, ultra-high pressure, and pressure loss situations. Conventionally, the handle of a self-closing valve requires manual lifting to release gas. Some valves are difficult to install in complex environments, making manual operation difficult. Therefore, automated control of the handle has become a popular demand among many users. Existing self-closing valves cannot meet this need, and improvements are needed. Summary of the Invention

[0003] To solve at least one of the above technical deficiencies, the present invention provides the following technical solutions:

[0004] The cam is secured to the valve body by means of a camming mechanism and adapted to urge the valve body into engagement with the cam, and the camming mechanism is secured to the cam by means of a camming mechanism and adapted to urge the valve body into engagement with the cam. Above the tail end, the head end of the pendulum block is at least partially located in the movable groove, and the lifting and lowering of the fixed seat drives the pendulum block to swing. During the left and right swinging of the pendulum block, the blocking rod moves back and forth in coordination. A driving mechanism is provided on the top of the valve body, and the driving mechanism includes a shell, a mounting seat, a driving motor 1, a driving motor 2, a gear transmission mechanism 1, a gear transmission mechanism 2, a control circuit board, and a connecting rod are provided in the shell. The control circuit board has a wireless transceiver component and the control circuit board is connected to the driving motor 1 and the driving motor 2. The driving motor 1 and the driving motor 2 are located on the mounting seat and the driving motor 1 drives the mounting seat to move back and forth through the gear transmission mechanism 1. The driving motor 2 lifts and lowers the connecting rod through the gear transmission mechanism 2. A notch is provided in the shell wall corresponding to the connecting rod and a connecting hole cooperating with the connecting rod is provided on the lifting button. During the movement of the mounting seat, the end of the connecting rod extends into the connecting hole, and the driving motor 2 cooperates with the gear transmission mechanism 2 to drive the connecting rod upward and synchronously move the lifting button upward.

[0005] In this solution, the pendulum block cooperates with the fixed seat, and the left and right swing of the pendulum block causes the blocking rod to move back and forth, thereby causing the air intake plug to open or close the air intake cavity, and the drive motor 1 cooperates with the gear rack mechanism 1 to drive the mounting seat to move, so that the corresponding connecting rod is inserted into the lifting button connecting hole, and the drive motor 2 cooperates with the gear transmission mechanism 2 to drive the connecting rod upward and synchronously lift the lifting button to open the valve. When in use, the built-in APP can be used in the mobile phone to control the start and stop of the two drive motors by the APP, thereby realizing online control of lifting the lifting button, without the need for manual opening on the spot, and convenient to use.

[0006] Furthermore, the gear transmission mechanism includes a matching gear and rack. The output end of the drive motor is provided with a gear, and the housing cavity wall is provided with a rack. The gear and rack cooperate to improve the movement accuracy of the mounting seat.

[0007] Furthermore, a slider is provided at the bottom of the mounting seat, and a guide rail cooperating with the slider is provided at the corresponding bottom wall of the valve body cavity. The cooperation between the slider and the guide rail improves the stability of the movement of the mounting seat.

[0008] Furthermore, the second gear transmission mechanism includes a second gear and a second rack. A second gear is provided at the output end of the second drive motor. A T-shaped groove is formed axially on one side of the second rack and a T-shaped slider is provided on the mounting seat surface corresponding to the T-shaped groove. The T-shaped slider cooperates with the T-shaped groove to guide the second rack. A connecting rod is radially fixed on the second rack, and the slider cooperates with the groove to improve the stability of lifting.

[0009] Furthermore, elastic strips are arranged on the two groove walls at the notch of the shell wall corresponding to the connecting rod, and the two elastic strips are attached to each other to seal the notch. The elastic strip is added to seal the notch. When in use, the connecting rod can pass between the two elastic strips.

[0010] Furthermore, the top surface of the mounting seat is stepped and a mounting groove is formed on each stepped surface. Drive motor 1 and drive motor 2 are respectively arranged in two of the mounting grooves. The control circuit board is arranged on the stepped interface above drive motor 1, which is reasonably laid out and convenient for assembly.

[0011] Furthermore, a sensor is disposed within the housing cavity to monitor the vertical position of the knob. The sensor is connected to the control circuit board. If the sensor fails to detect the knob after the connecting rod moves the knob upward to a predetermined position and then resets, this indicates a problem with the valve or piping, facilitating troubleshooting.

[0012] Furthermore, a positioning seat is provided in the air intake cavity of the valve body, the blocking rod passes through the cavity of the positioning seat and a reset spring is provided on the surface of the positioning seat facing the limiting armature, the other end of the reset spring abuts against the peripheral wall of the blocking rod, the bottom wall of the valve body cavity corresponding to the hand torsion rod is in the shape of a groove and a fixed seat is provided in the groove cavity, the limiting armature is fixed at the groove of the groove body, the positioning seat is added to improve the stability of the movement of the blocking rod, and the groove structure of the bottom wall of the valve body is convenient for the placement of the fixed seat.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention cooperates with the fixed seat and the blocking rod through swinging, and adds a driving mechanism to facilitate online control of the valve opening, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic structural diagram of the novel lever-type gas self-closing valve in Example 1;

[0017] Wherein, the accompanying drawings are marked as follows:

[0018] 1. Valve body; 2. Lifting button; 3. Twist rod; 4. Rubber membrane; 5. Nut; 6. Limit armature; 7. Upper armature; 8. Permanent magnet; 9. Fixed seat; 10. Pendulum block; 11. Blocking rod; 12. Inlet plug; 13. Return spring; 14. Pin; 15. Positioning seat; 16. Inlet cavity; 17. Angle valve; 18. Main body; 19. Cover; 20. Mounting seat; 21. Drive motor 1; 22. Control circuit board; 23. Drive motor 2; 24. Gear 2; 25. Rack 1; 26. Sensor; 27. Elastic strip; 28. Connecting hole; 29. Rack 2; 30. Slider; 31. Connecting rod; 32. Excess flow limiting component; 33. Movable slot. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1

[0021] like Figure 1 As shown, the new lever-type gas self-closing valve includes a valve body 1, a fixed seat 9, an air inlet plug 12, a torsion bar 3, a lifting knob 2, a limiting armature 6, an upper armature 7, a permanent magnet 8, a rubber membrane 4, a blocking rod 11, a return spring 13, and a pendulum block 10. The valve body 1 has an air inlet cavity 16 and an air outlet cavity formed at its front and rear ends, respectively. A rubber membrane 4 is fixed within the valve body 1 cavity, separating the upper and lower areas of the valve body 1 cavity. The bottom end of the torsion bar 3 passes through the middle hole of the rubber membrane 4 and is fixed to the upper armature 7. The top end of the torsion bar 3 extends from the top hole of the valve body 1 and is mounted with the lifting knob 2. Below the torsion bar 3, a groove is formed on the bottom wall of the valve body 1. The limiting armature 6 is threadedly connected to the groove at the top notch of the groove. The fixing seat 9 is placed within the groove cavity of the groove.

[0022] A movable groove 33 is formed inwardly on the surface of the fixed seat 9 facing the air inlet cavity 16 of the valve body 1, and the convex end of the top of the fixed seat 9 extends from the hole on the limiting armature 6 and is fixed to the permanent magnet 8. In this example, the air inlet plug 12 is installed in the air inlet cavity 16 and along the direction of gas flow. A convex ring is formed on the cavity wall at the outlet of the air inlet cavity 16 facing the air inlet plug 12. The air inlet plug 12 and the convex ring cooperate to improve the partition effect. The end of the blocking rod 11 is fixed to the air inlet plug 12. The air inlet plug 12 is made of rubber, and the other end of the blocking rod 11 extends into the space where the fixed seat 9 is located. In order to improve stability, a positioning seat 15 is fixed at the outlet of the air inlet cavity 16. The blocking rod 11 passes through the central hole of the positioning seat 15. A radially fixed pin 14 is installed on the blocking rod 11, and a reset spring 13 is installed between the pin 14 and the positioning seat 15. Figure 1 As shown, the return spring 13 is sleeved on the blocking rod 11.

[0023] In this example, a pendulum block 10 is installed between the end of the blocking rod 11 and the fixed seat 9 in the space where the fixed seat 9 is located, wherein the tail end of the pendulum block 10 is pivotally connected to the cavity wall of the valve body 1 by an axis, etc., and the end of the blocking rod 11 is located above the tail end of the pendulum block 10, and the bottom of the head end of the pendulum block 10 is located in the movable groove 33. Under this structure, the lifting button moves up, and the fixed seat is raised by the hand torsion rod, permanent magnet, armature, etc. The groove wall of the movable groove abuts and pushes the pendulum block to swing to the right. During the right swing of the pendulum block, the blocking rod is pushed to move right, and the air intake plug moves to open the air intake cavity. When the lifting button is moved down and reset, the fixed seat is reset. Under the action of the reset spring, the blocking rod drives the pendulum block to reset, and the air intake plug blocks the air intake cavity.

[0024] In this example, a drive mechanism is mounted on the top of the valve body 1. The drive mechanism comprises a housing, which is fixed to the valve body wall on the side of the handle. The housing consists of a rectangular body 18 and a stepped cover 19, which seals the top opening of the body 18. A mounting seat 20 is slidably connected to the body 18 of the housing. Specifically, a slider 30 is mounted at the bottom of the mounting seat 20, and a guide rail is mounted on the corresponding bottom wall of the body 18 cavity. The slider and guide rail cooperate to improve the movement stability of the mounting seat. The top surface of the mounting seat 20 has a two-level stepped shape, with each step having a concave mounting groove. In the figure, the left mounting groove houses a drive motor 21 along the width of the mounting seat, while the right mounting groove houses a drive motor 23 along the length of the mounting seat. A rack-and-pinion transmission mechanism 1 comprises a gear 1 and a rack 1 25. Gear 1 is mounted on the output end of drive motor 1 21, while rack 1 25 is fixed to the bottom wall of the body 18 cavity along the length of the mounting seat 20. The drive motor 1 21 drives the mounting seat 20 through the cooperation of gear 1 and rack 1 25. The second gear rack transmission mechanism includes a second gear 24 and a second rack 29. The output end of the second driving motor 23 is installed with the second gear 24. The second rack 29 meshing with the second gear slides with the end wall of the mounting seat 20. The second rack 29 is formed with a T-shaped groove on the surface facing the end face of the mounting seat 20, and a T-shaped slider is formed at the corresponding end face of the mounting seat. The T-shaped slider and the T-shaped groove cooperate to guide the movement of the second rack. The second rack 29 is radially fixed with a connecting rod 31 on the surface facing the lifting button 2. The connecting hole 28 is formed on the peripheral wall of the lifting button 2 corresponding to the end of the connecting rod 31, and a notch is formed on the main body cavity wall corresponding to the connecting rod 31. During the movement of the mounting seat toward the lifting button, the connecting rod is extended into the connecting hole, and the driving motor 2 cooperates with the second gear rack transmission mechanism to drive the connecting rod to move upward, and the lifting button is synchronously driven upward to open the air intake cavity. Then the mounting seat moves backward to disengage the connecting rod from the connecting hole.

[0025] In this example, a control circuit board 22 is installed at the stepped interface above drive motor 1 21. This control circuit board 22 integrates a wireless transceiver to facilitate connection with the mobile phone's built-in app. The control circuit board 22 is connected to drive motor 1 21 and drive motor 2 23. A sensor 26 is also added to this example to monitor the vertical position changes of the handle. Sensor 26 is located within the housing cavity, with a detection end extending from the housing near the top surface. Sensor 26 is connected to control circuit board 22. During use, if the handle moves upward to the predetermined position after the connecting rod is reset and the handle moves downward to reset, the sensor will not detect the handle, indicating a problem with the valve or pipeline, which facilitates troubleshooting.

[0026] In this example, at the notch where the end of the connecting rod 31 extends, elastic strips 27 are relatively fixed on the two groove walls at the notch. The two elastic strips 27 are attached to each other to seal the notch. An elastic strip is added to seal the notch. When in use, the connecting rod can pass between the two elastic strips.

[0027] In this example, an angle valve 17 is installed at the outlet cavity to control the on-off, and an excess flow limiting assembly 32 composed of a spring and a plug is installed in the intake cavity 16 in front of the intake plug 12 to close the cavity when the gas flow rate exceeds the limit.

[0028] When in use, you can build an APP into the mobile phone, and the APP is connected to the control circuit board. The APP controls the driving motor 1 to cooperate with the gear rack transmission mechanism 1 to move the mounting seat toward the lifting button, so that the end of the connecting rod extends into the lifting button connection hole, and the driving motor 2 cooperates with the alcohol rack transmission mechanism 2 to move the connecting rod upward to lift the lifting button. Under the action of magnetic force, the fixed seat moves upward, and the groove wall of the movable groove pushes the pendulum block to swing. The swing of the pendulum block causes the blocking rod to move, and the air intake plug opens the air intake cavity. After that, the driving motor 1 and the driving motor 2 cooperate with the transmission mechanisms to reset, and there is no need to manually pull the lifting button.

[0029] If overpressure, low pressure or other faults occur, the button moves down, the fixed seat moves down, and the air intake plug blocks the air intake cavity. At this time, the button can be reset through the APP. After the connecting rod is reset, the sensor detects that the button cannot stay in the predetermined position, then it can be determined that there is a problem with the air intake pipe, etc., which helps to quickly troubleshoot the fault.

[0030] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that improvements and modifications that do not depart from the principles of the present invention are within the scope of protection of the present invention.

Claims

1. A new lever-type gas self-closing valve, comprising a valve body, a fixed seat, an air intake plug, a hand torsion rod, a lifting button, a limiting armature, an upper armature, a permanent magnet, a rubber membrane, a blocking rod, a reset spring, and a pendulum block are arranged in the valve body cavity, the rubber membrane separates the upper and lower areas of the valve body cavity, the bottom end of the hand torsion rod passes through the middle hole of the rubber membrane and the upper armature is arranged at the bottom end, the top of the hand torsion rod extends from the top hole of the valve body and is provided with a lifting button, a fixed seat is arranged in the space surrounded by the limiting armature and the valve body cavity wall, a movable groove is arranged on the surface of the fixed seat facing the valve body air intake cavity, the top convex end of the fixed seat extends from the upper hole of the limiting armature and is fixed to the permanent magnet, the air intake plug is arranged in the air intake cavity and fixed to the end of the blocking rod, the end of the blocking rod extends into the space where the fixed seat is located, and a reset spring is arranged between the valve body cavity wall and the blocking rod, characterized in that A pendulum block is provided at a position between the end of the blocking rod and the fixed seat, the tail end of the pendulum block is hinged to the wall of the valve body cavity and the end of the blocking rod is located above the tail end of the pendulum block, the head end of the pendulum block is at least partially located in the movable groove, the lifting and lowering of the fixed seat drives the pendulum block to swing, and during the left and right swinging of the pendulum block, the blocking rod moves back and forth in coordination, a driving mechanism is provided at the top of the valve body, the driving mechanism includes a shell, a mounting seat, a driving motor 1, a driving motor 2, a gear transmission mechanism 1, a gear transmission mechanism 2, a control circuit board, and a connecting rod are provided in the shell, the control circuit board has a wireless transceiver component and the control circuit board is connected to the driving motor 1 and the driving motor 2, the driving motor 1 and the driving motor 2 are located on the mounting seat and the driving motor 1 drives the mounting seat to reciprocate through the gear transmission mechanism 1, the driving motor 2 lifts and lowers the connecting rod through the gear transmission mechanism 2, a notch is provided in the shell wall corresponding to the connecting rod and a connecting hole is provided on the lifting button to cooperate with the connecting rod, during the movement of the mounting seat 2. The novel lever-type gas self-closing valve according to claim 1, characterized in that: The gear transmission mechanism 1 includes a gear 1 and a rack 1 that match each other. The output end of the drive motor 1 is provided with a gear 1, and the rack 1 is provided on the cavity wall of the housing.

3. The new lever-type gas self-closing valve according to claim 2, characterized in that: A sliding block is provided at the bottom of the mounting seat, and a guide rail cooperating with the sliding block is provided at the corresponding bottom wall of the valve body cavity.

4. The novel lever-type gas self-closing valve according to claim 1 is characterized in that: The second gear transmission mechanism includes a second gear and a second rack. The second gear is provided at the output end of the second drive motor. A T-shaped groove is formed axially on one side of the second rack, and a T-shaped slider is provided on the mounting seat surface corresponding to the T-shaped groove. The T-shaped slider cooperates with the T-shaped groove to guide the second rack, and a connecting rod is fixed radially on the second rack.

5. The novel lever-type gas self-closing valve according to claim 1 is characterized in that: Elastic strips are arranged oppositely on the two groove walls at the notch of the shell wall corresponding to the connecting rod, and the two elastic strips are pressed against each other to seal the notch.

6. The novel lever-type gas self-closing valve according to claim 1 is characterized in that: The top surface of the mounting seat is stepped and a mounting groove is formed on each stepped surface, wherein the first drive motor and the second drive motor are respectively arranged in two of the mounting grooves, and the control circuit board is arranged on the stepped surface above the first drive motor.

7. The new lever-type gas self-closing valve according to claim 1 is characterized in that: A sensor is arranged in the housing cavity, and the sensor is used to monitor the up and down position changes of the handle. The sensor is connected to the control circuit board.

8. The novel lever-type gas self-closing valve according to claim 1 is characterized in that: A positioning seat is provided in the air intake cavity of the valve body, the blocking rod passes through the cavity of the positioning seat and a reset spring is provided on the surface of the positioning seat facing the limiting armature, the other end of the reset spring abuts against the peripheral wall of the blocking rod, the bottom wall of the valve body cavity corresponding to the hand torsion rod is in the shape of a groove and a fixing seat is provided in the groove cavity, and the limiting armature is fixed at the groove of the groove body.

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